Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 140 · 40 questions

Thinking tip (Enough facts, then decide): Not enough evidence: “One mango was sour, so all are sour.” Enough: “We checked all 40 mangoes; every one was ripe.” Before you answer, check every fact you need is given. 7 rows with 9 in each → 7 × 9 = 63. “A box has 9 in each row” with no number of rows → not enough info. Missing facts hide in words like “and a bag”, “older” (by how much?) and “a long film” (how long?).

1. 1.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
2. 2.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
3. 3.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
5. 5.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
6. 6.🧩 Tara is 8 years old. Diya is 4 years older than Tara. How old is Diya? (a) not enough info (b) 12 (c) 13 (d) 4
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
8. 8.🧩 Nisha is 9 years old. Arjun is older than Nisha. How old is Arjun? (a) 14 (b) 11 (c) 10 (d) not enough info
9. 9.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
10. 10.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
12. 12.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 2 PM
13. 13.🧩 Arjun is 7 years old. Ishaan is 9 years older than Arjun. How old is Ishaan? (a) 17 (b) not enough info (c) 16 (d) 9
14. 14.🧩 A box has 6 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 42 (b) not enough info (c) 12 (d) 36
15. 15.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
16. 16.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Ishaan bought 6 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹180 (c) ₹35 (d) not enough info
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Arjun is 11 years old. Meera is 8 years older than Arjun. How old is Meera? (a) 20 (b) not enough info (c) 8 (d) 19
20. 20.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
21. 21.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
22. 22.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
23. 23.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 4 (c) 8 (d) 40
24. 24.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
27. 27.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) 28 (b) not enough info (c) 21 (d) 10
28. 28.🧩 Ananya is 12 years old. Aarav is 9 years older than Ananya. How old is Aarav? (a) 9 (b) 22 (c) 21 (d) not enough info
29. 29.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
30. 30.🧩 A box has 3 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 9 (b) not enough info (c) 18 (d) 24
31. 31.🧩 A box has 6 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 14 (b) 56 (c) 48 (d) not enough info
32. 32.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 9 PM (c) 6 PM (d) not enough info
33. 33.🧩 Saanvi is 8 years old. Kabir is older than Saanvi. How old is Kabir? (a) 9 (b) 10 (c) 13 (d) not enough info
34. 34.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) not enough info (b) 8 (c) 15 (d) 20
35. 35.🧩 Tara is 9 years old. Saanvi is older than Tara. How old is Saanvi? (a) not enough info (b) 10 (c) 11 (d) 14
36. 36.🧩 Nisha bought 2 markers and a cap for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹110 (c) not enough info (d) ₹108
37. 37.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
38. 38.🧩 Diya bought 2 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹50 (c) ₹25 (d) not enough info
39. 39.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
40. 40.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True

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